DecontaminationCâu 9 / 100
An ultrasonic cleaner has just been filled with fresh solution at the start of the shift. Why must the unit be degassed before instruments are processed?
a.Dissolved air in fresh solution cushions the sound waves and prevents effective cavitation
b.Degassing raises the solution to the required thermal disinfection temperature
c.Degassing removes residual detergent from the previous shift
d.Degassing sterilizes the solution so instruments leave the unit sterile
Giải thích
Fresh water holds dissolved gas that absorbs ultrasonic energy and dampens bubble formation, so the unit is run empty for several minutes to drive the gas out and restore full cavitation. Degassing is not a heating, rinsing, or sterilizing step. An ultrasonic cleaner never sterilizes; it is a cleaning device only.
Trích dẫn luật: AAMI ST79Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- During a survey, an inspector reviews the department's daily environmental logs and asks what relative humidity range must be maintained in the work areas. What is correct?
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- A technician is orienting a student at the ultrasonic cleaner and is asked what actually removes the soil from the instruments. What is the correct answer?
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